AQA Equations Flashcards
Whats the equation for Kinetic Energy?
Kinetic energy = 1/2 x mass x speed^2
What is the equation for Gravity Potential Energy?
GPE = mass x gravitational field strength x height
What is the equation for power?
Power = work done / time taken = energy transferred / time taken
What is the equation for efficiency?
Efficiency = useful energy output / total energy input
Efficiency = useful power output / total power input
What is the equation for density?
Density = mass / volume
What is the equation for weight?
weight = mass × gravitational field strength
What is the equation for work done?
work done = force × distance
(moved along the line of action of the force)
What is the equation for force?
force = spring constant x extension
What is the equation for moment of a force?
moment of a force = force x distance
(perpendicular to the direction of the force)
What is the equation for pressure?
Pressure = force normal to a surface / area of that surface
What is the equation for distance travelled?
distance travelled = speed x time
What is the equation for acceleration?
Acceleration = change in velocity / time taken = final velocity - initial velocity / time taken
What is the equation for the resultant force?
resultant force = mass x acceleration
What is the equation for momentum?
momentum = mass x velocity
